class_docstr: Tests for the FengYun4 base class for the components missed by AGRI/GHI tests.
docstr: Initialise the tests.
docstr_tok: ["Initialise","the","tests","."]
code: def setup_method(self):
      """Initialise the tests."""
      self.p = mock.patch.object(
          FY4Base, "__bases__", (FakeHDF5FileHandler2,)
      )
      self.fake_handler = self.p.start()
      self.p.is_local = True
  
      self.file_type = {"file_type": "agri_l1_0500m"}
  
file_path: satpy/satpy/tests/reader_tests/test_fy4_base.py
imports: from unittest import mock
  import pytest
  from satpy.readers.fy4_base import FY4Base
  from satpy.tests.reader_tests.test_agri_l1 import FakeHDF5FileHandler2
label_desc: Use image node_id 1 for calling the Test_FY4Base obj's underlying member method code with example usage: obj.setup_method() without return types